Frequencies for ami7astr variable in hvbp_ami_08_06_2015 dataset :

       AMI-7a |
Measure Score |      Freq.     Percent        Cum.
--------------+-----------------------------------
  1 out of 10 |          1        0.03        0.03
Not Available |      3,056       99.97      100.00
--------------+-----------------------------------
        Total |      3,057      100.00

by Jean Roth , jroth@nber.org , 16 Nov 2016